A point object O is placed in front of a glass rod having spherical end of radius of curvature 30 cm.  The image would be formed at

By using formula μ2v−μ1u=μ2−μ1R⇒1.5v−1(−15)=(1.5−1)+30⇒v=−30cmNegative sign shows that, image is obtained on the same side of object i.e. towards left.